Garnet Street RFI_20150513_ITC (Part 1)

Please note in relation to the proposed continuation of the 4m high back of goal fencing to form a barrier to the
western most drain, it is considered that the use of 1200mm fencing similar to the property fencing would be
sufficient to secure the drain opening from the playing fields. It is noted that the 4m high fencing requires
significant footings and bracing. Whilst Council has indicated their preference in regard to the fencing it is the
design engineers (RPEQ) responsibility to prepare the final design of the necessary safety fencing.


Response
At this stage, a Contractor has not been appointed as the works are currently being tendered. The
abovementioned conditions have been included in the tender documents and a Traffic
Management/Construction Management Plan will be provided to Council once available.
We request that Council issue a conditional Decision Notice that requires a Traffic Management/Construction
Management Plan be provided to Council prior to a pre-start meeting being conducted.
The extension of the existing fence along the southern edge of the sporting fields has been reduced to 2.0m.


Issue 4
The state Planning Policy Appendix 3 has performance objectives for the management of water quality. It is not
clear from the application whether these Policies are met – in particular in relation to how the culverts will
change waterway hydrology and peak flows, and the impacts this will have on the creek geomorphology
Information Required
Demonstrate how the culverts have been designed to mitigate changes on the creeks hydrology and
geomorphology. In particular, demonstrate compliance with Performance Outcome PO6 and PO7 of the SPP
Code: Water Quality.


Response
Reference is made to the report titled “Garnet Street Culvert Upgrade Hydraulic Assessment” prepared by
Hydrology and Water dated 29 July 2014. Section 5 of the report demonstrates and provides a discussion of the
results in relation to the hydrology of the creek at the culvert location.
The design has been undertaken in an effort to reduce the ongoing impacts of bank erosion associated with the
flows through the existing culverts at this location. The inclusion of rock gabions and rock protection in the
immediate vicinity of the inlet and outlet to the culverts will help mitigate further erosion in the area of the
works.
As part of the tender documents, the Contractor is required to submit a CPESC certified erosion and sediment
control plan and the works undertaken in accordance with all relevant environmental legislation. A certified
erosion and sediment control plan will be provided to Council prior to the commencement of the pre-start
meeting.


Issue 5
The Noosa Plan Sediment and Erosion Control Code require that Development minimises erosion and sediment
transport and also that Stormwater is diverted around disturbed areas. The provided Erosion and Sediment
Control plan does not clearly demonstrate that best practice sediment and erosion controls are proposed to
achieve these outcomes.
Information Required
Demonstrate that the proposed strategy to manage sediment and erosion control is current best practice and
therefore achieves the objective of minimisation of impacts. In particular, demonstrate how the proposed
construction strategy for the culverts within the watercourse is consistent with the International Erosion and
Sediment Control Association - Best Practice Erosion and Sediment Control Appendix I, Instream Works 2008.